［Purpose/significance］ This paper aims to explore factors influencing individuals’ hiding intention of tacit knowledge and its internal mechanism in university research team［Method/process］ From the dual perspectives of positively promoting factors and negatively inhibiting factors,the paper proposes research hypotheses and theoretical model by integrating social exchange theory and psychological ownership theoryParticipants from more than 100 university research teams in central China are selected as research samples,and 298 valid questionnaires are obtainedSmartPLS 20 is applied to test hypotheses and the model［Result/conclusion］ Results show that perceived emotional benefit inhibits tacit knowledge hiding intention,while perceived cost of knowledge power and perceived cost of status power promote itOrganizational reward and collectivism both positively influence perceived emotional benefit and perceived knowledge benefitPerceived selfownership of knowledge has a positive impact on perceived cost of knowledge power and perceived cost of status power,while perceived organizational ownership of knowledge negatively affects perceived cost of knowledge power and perceived cost of status power.